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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Oxydation thermique du chrome pur en atmosphère contrôlée : propriétés semiconductrices et structurales de la chromine / Pure chromium thermal oxidation in controlled atmosphere : chromia semiconducting and structural propertiesParsa, Yohan 08 November 2018 (has links)
La durabilité chimique des alliages métalliques résulte notamment de la nature des défauts ponctuels assurant le transport au travers du film d’oxydation formé en surface. L'élaboration de couches d'oxyde modèles par oxydation thermique en pression contrôlée et ALD (Atomic Layer Deposition) et l'étude de leurs propriétés semi conductrices (conditionnées par la nature des défauts ponctuels) devrait permettre une meilleure compréhension des mécanismes de formation de ces couches d'oxyde. / The chemical durability of the metal alloy results in particular from the nature of point defects providing transport through the oxidation film formed on the surface. Models oxide layers, grown by thermal oxidation and Alomic Layer Deposition, will be studied by photoelectrochemistry. This will provide us information about the semiconductive properties of the oxide, determined by the point defect in the oxide layer, and should allow us a better understanding of the formation mechanism of these oxide.
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